package com.itheima.reggie.controller;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.core.toolkit.StringUtils;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.itheima.reggie.common.R;
import com.itheima.reggie.pojo.Employee;
import com.itheima.reggie.service.EmpService;
import jakarta.servlet.http.HttpServletRequest;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.util.DigestUtils;
import org.springframework.web.bind.annotation.*;

import java.time.LocalDateTime;

@Slf4j
@RestController // @Controller + @ResponseBody  作用：将返回值转换为json格式
@RequestMapping("/employee")
public class EmpController {

    @Autowired  // 自动注入
    private EmpService empService;  // 员工业务接口

    @PostMapping("/login")
    public R<Employee> login(HttpServletRequest request, @RequestBody Employee employee) {
        log.info("员工登录");

        //1.将页面提交的密码进行md5加密
        String pwd = employee.getPassword();
        pwd = DigestUtils.md5DigestAsHex(pwd.getBytes());
        //2.根据页面提交的用户名username查询数据库
        LambdaQueryWrapper<Employee> queryWrapper = new LambdaQueryWrapper<>();
        queryWrapper.eq(Employee::getUsername, employee.getUsername());
        Employee emp = empService.getOne(queryWrapper);
        //3.判断用户名是否存在
        if (emp == null) {
            return R.error("登录失败，用户名不存在");
        }
        //4.判断密码是否正确
        if (!emp.getPassword().equals(pwd)) {
            return R.error("登录失败，密码错误");
        }
        //5.查看员工状态，如果已禁用，则不允许登录
        if (emp.getStatus() == 0) {
            return R.error("登录失败，账号已禁用");
        }
        //6.将登录成功的员工信息保存到session中
        request.getSession().setAttribute("employee", emp.getId());
        return R.success(emp);
    }

    @PostMapping("/logout")
    public R<String> logout(HttpServletRequest request) {
        log.info("员工退出");
        request.getSession().removeAttribute("employee");
        return R.success("退出成功");
    }

    @PostMapping
    public R<String> save(HttpServletRequest request,@RequestBody Employee employee) {
        log.info("新增员工,员工信息：{}", employee.toString());

        // 设置初始密码123456，并使用md5加密
        employee.setPassword(DigestUtils.md5DigestAsHex("123456".getBytes()));
        //employee.setCreateTime(LocalDateTime.now());
        //employee.setUpdateTime(LocalDateTime.now());
        //// 获得当前登录用户的id
        //Long empId = (Long) request.getSession().getAttribute("employee");
        //employee.setCreateUser(empId);
        //employee.setUpdateUser(empId);

        empService.save(employee);
        return R.success("新增员工成功");
    }

    @GetMapping("/page")
    public R<Page> page(int page, int pageSize, String name){
        log.info("page={}, pageSize={}, name={}",page,pageSize,name);
        // 构造分页构造器
        Page pageInfo = new Page(page,pageSize);
        // 构造条件构造器
        LambdaQueryWrapper<Employee> queryWrapper = new LambdaQueryWrapper<>();
        // 添加过滤条件
        queryWrapper.like(StringUtils.isNotEmpty(name), Employee::getName,name);
        // 添加排序条件
        queryWrapper.orderByDesc(Employee::getUpdateTime);
        // 执行查询
        empService.page(pageInfo,queryWrapper);
        return R.success(pageInfo);
    }

    @PutMapping
    public R<String> update(HttpServletRequest request,@RequestBody Employee employee){
        log.info(employee.toString());
        //Long empId = (Long) request.getSession().getAttribute("employee");
        //employee.setUpdateTime(LocalDateTime.now());
        //employee.setUpdateUser(empId);
        empService.updateById(employee);
        return R.success("员工信息修改成功");
    }

    @GetMapping("/{id}")
    public R<Employee> getById(@PathVariable Long id){
        log.info("根据id查询员工信息……");
        Employee employee = empService.getById(id);
        if (employee != null){
            return R.success(employee);
        }
        return R.error("没有查询到对应的员工信息");
    }
}
